Projects / Programmes
Three advances towards realistic description of strongly correlated electron transport
| Code |
Science |
Field |
Subfield |
| 1.02.01 |
Natural sciences and mathematics |
Physics |
Physics of condesed matter |
| Code |
Science |
Field |
| 1.03 |
Natural Sciences |
Physical sciences |
electronic transport, thermoelectric effect, dynamical mean-field theory, spin-orbit coupling, electron-phonon coupling
Data for the last 5 years (citations for the last 10 years) on
April 24, 2024;
A3 for period
2018-2022
Data for ARIS tenders (
04.04.2019 – Programme tender,
archive
)
| Database |
Linked records |
Citations |
Pure citations |
Average pure citations |
| WoS |
456 |
13,829 |
11,915 |
26.13 |
| Scopus |
452 |
14,254 |
12,377 |
27.38 |
Researchers (9)
Organisations (1)
| no. |
Code |
Research organisation |
City |
Registration number |
No. of publicationsNo. of publications |
| 1. |
0106 |
Jožef Stefan Institute |
Ljubljana |
5051606000 |
90,724 |
Abstract
The resistivity is a property of the solid that is very easily measured experimentally, but is very difficult to calculate theoretically. The project will develop methods for calculation of transport properties of correlated electron systems in a realistic setting and apply them to the case of transition metal oxides. Currently successful calculations of transport have been demonstrated in a simple model single-orbital setting using the dynamical mean-field theory (DMFT). There have been only a few attempts of realistic calculations in multi-orbital realistic setting and these resulted in values of resistivity that is at elevated temperature substantially smaller (factor of 5) than the measured one. This large discrepancy between the outcome of measurements and the results of the state-of-the-art realistic theoretical approach to the correlated electron systems is a fundamental puzzle and a strong motivation for the development of the better techniques. The project proposes a concrete strategy to improve the situation. It will implement three workpackages (WP) that explore two different paths to a more accurate calculation of the transport properties. WP1 will investigate if the the spin-orbit coupling that is important in transition-metal oxides, especially with 4d and 5d partially occupied shells. In WP1 the calculations of transport will be performed with proper account of this effect that is certainly important in ruthenates, which is one family of the compounds where the discrepancy between measured and calculated resistivity was documented. WP2 will explore the possibility that the non-local processes that are neglected in the DMFT method could play a role. The non-local processes are for instance the scattering on long wave-length spin fluctuations that become imporatant in proximity to magnetic transiitions, or the vertex corrections that have been shown recently by PI and investigators to play an important role. The project will implement extensions of DMFT that properly take into account the impact of such processes on electronic transport. WP3 will explore the role of vibrations of crystalline lattice, in particular close to the melting temperature and above for electron transport.
